Safari Extension: PopSearch

I love this extension as a keyboard-accessible replacement for the search feature in Safari (and other plugins.) Several search engines (configurable) are just a keystroke away.

There is a great configuration interface behind the settings button where you can add your own search engines and hotkeys, which you can use instead of selecting the search engine in the drop list.

For example, to search on Wikipedia, type 'w' and a space and the droplist will switch to Wikipedia and clear the search box.

brilliant.